Making joints of pipes-having bell ends



(No Model.)

G.LEHLBAO-H. MAKING JOINTS 0P PIPES HAVING BELL ENDS. No. 572,901.Patented Dec. 8, 1896.

h l/ u A WITNESSES: mmmm, mvEuTom ATTORNEYS UNITED STATES PATENT OFFICE.

GUSTAV LEHLBACH, OF JERSEY CITY, NElV JERSEY.

MAKING JOINTS OF PIPES -HAVING BELL ENDS.

SPECIFICATION forming part of Letters Patent No. 572,901, dated December8, 1896. Application filed July 27, 1895. Serial No. 557,383. (Nomodel.) I

To all whom it may concern:

Be it known that I, GUSTAV LEHLBACH, a citizen of the United States,residing at J ersey City, in the county of Hudson and State of NewJersey, have invented a new and useful Method of Joining Sections ofSewer, Water, or other Pipes Having Bell and Spigot Ends, of which thefollowingis a specification.

The object of my invention is to make a perfectly tight joint with morecertainty and convenience than can be made by the methods now in use.

The invention consists in the improved device for filling the joints ofconnecting pipes with cementitious matter and in the arrangements andcombinations of parts, all substantially as will be hereinafter setforth, and finally embraced in the clauses of the claim.

I obtain the desired object by the devices and arrangements shown in theaccompanying drawings, in which- Figure l is a longitudinal View of theringshaped mortar-bag. Fig. 2 is a transverse view of the same. Fig. 3is a longitudinal vertical section through the center of themortar-injector resting on top of the pipe, showing the method of makingthe joint with a mortar-bag. Fig. 4: is a side-elevation view of themortar-injector; and Fig. 5 is a longitudinal vertical section of apipe-joint with a ring-band cover, preferred under ordinary conditions.

Similar letters refer to similar parts throughout the several views.

The ring mortar-bag, as shown in Figs. 1 and 2, is composed of twoparts, namely, the body of the bag B and the funnel-lip'C, and may bemade of canvas, cotton sheeting, or other suitable flexible material ofsuch shape and size that when completely filled it will fully occupy thespace between the bell and spigot of the pipes to be joined.

The annular portion B, which may be a baglike receptacle for mortar, asdescribed, or a cover M for forming with the bell and spigot ends thereceptacle for mortar, as hereinafter provided, is adapted to extendaround the pipe-section A and either enter the joint formed by the belland spigot ends or overlie and continuously inclose the same.

The mortar-injector (shown in Figs. 3 and 4) comprises a cylindricalreceptacle D, open at its upper end to receive the fluid mortar and atits lower end provided with a discharge tube or spout E, adapted toenter or communicate with the funnel-lip 'O. Said cylindrical receptacleis provided with a suitable bed-plate K, the parts being held togetherby lugs F. At its upper open end said cylinder is provided with abail-like guide G, having a slot or recess at the top to receive andhold the piston-rod I. With the cylinder is arranged a piston, plunger,or pressure-head H, to the upper side of which is fastened the said rod1, the latter extending from said piston vertically to said guide G,along and against which it operates reciprocally.

The textile fabric of the covcrbeing porous admits an easy outflow ofair from all parts of its-texture and yet prevents an outflow of cement,and thus, as the latter is forced into the chamber beneath said cover,the air flows out and allows the cement to be thoroughly compressed inthe joint and the air to be fully forced out, so that the cement isnonporous and makes a tight joint thoroughly impervious to water.

The piston-rod I has at the side opposite that at which it bears on theguide a series of projecting bearings O, which may be of the form ofpins, as indicated in Fig. 4. On these a hand-lever J, fulcrumed,preferably, at one side of the bail-like guide, may be pressed to forcethe piston downward and press the fluid mass of mortar downward andcausing it to flow out through the discharge tube or spout E into thefunnel-lip or feedduct 0. The lever J is loosely held upon its fulcrumalpin to freely admit of the lever being transferred from one bearing toanother, and is so disposed in its relation to the piston-rod I as toforce the same against the bail and thus hold it in the slot or recesstherein and cause said rod to maintain a vertical position.

By the construction described the piston and its rod are readilyseparable and removable from the cylindrical receptacle to allow thelatter to be filled with semiliquid or plastic mortar fluid underpressure.

When the annular bag B is employed, the operation of imperviouslypacking or filling the bell end with mortar is performed by firstbrought into communication with the feed duct or lip O, as shown in Fig.3, by drawing the said feed-duct over the discharge-tube and holdingsaid parts in inseparable relation by a clamp-ring (not shown) or othersuitable device, in which relation said parts are held during thesubsequent operations.

The cement mortar, mixed sufficiently soft or fluid to be readily forcedinto the mortarbag, is then filled into the cylinder, the piston beingunshipped for the purpose, which the construction of the injector allowsreadily to be done. The piston is then reinserted into the cylinder andthe mortar is forced into the bag under pressure by the force exertedupon the lever J, as will be readily understood by reference to thedrawings.

\Vhere the space between the spigot and the bell is small and irregular,as it frequently is in pipes as at present constructed, rendering theeasy adjustment of the bag within the joint difficult and obstructingthe free flow or pressure of the mortar into the same, to secure thedesired impermeability I provide an annular band-like cover M, havingthe feed-duct C extending from one side, as in the construction beforereferred to. This cover is made of canvas, cotton sheeting, or otherflexible but strong material capable of resisting the pressure due tothe downwardly-forced piston acting upon the cement mortar. The band isof sufficient width to cover the joint and is to be fastened more orless imperviously to the pipe-sections on opposite sides of said jointby means of strong twine or other suitable devices, (not shown,)

so that the mortar will be prevented from flowing or being forced outfrom the cover and wasted and so that a pressure can be maintainedduring the period of fluidity, a packing L of suitable material havingbeen previously inserted and rammed home in the bell against the insideend thereof, so as to prevent the mortar in its more or less fluid orplastic state from being forced into the interior of the pipes when thepressure is applied. The object is secured or effected by filling thecylinder with liquid, fluid, or thinly-plastic mortar, such, preferably,as contains hydraulic cement, which will quickly set or harden whenallowed to remain in position at rest; then arranging the piston, thelever, and other appliances in position, as described, and forcing saidpiston downward upon said cement mortar, by which means said cementmortar is forced outward through the feed spout and duct into the joint,the pressure from behind causing said cementitious matter to enter allrecesses and crevices in the joint into very intimate connection orcontact with the walls of the joint. Having thus been applied to thejoint, said mortar may be and is maintained under abnormal pressureuntil it is set and hardened sufficient to prevent its falling away fromthe walls of the joint.

Having thus described the invention, what I claim as new is 1. In adevice for filling the joints of connecting pipe-sections with cement,the combination with the receptacle D, having an open upper end adaptedto allow the withdrawal of the piston, the bail fastened to saidreceptacle at its opposite ends and turned over and above the open endof the receptacle, a piston separable from said receptacle, a piston-rodhaving said piston at one end and at its upper opposite end hearing atone of its sides against one side of the bail and at its opposite sideprovided with a series of bearings, and a hand-lever fulcrumed upon saidbail and adapted to press against the side of the piston-rod and hold itagainst the bail when forcing down the piston, substantially as setforth.

2. The combination with a receptacle for fluid cement mortar, a pistonand means for operating the same, a duct from said receptacle, and atextile cover pervious to air in connection with said duct and adaptedto be applied to the pipe-joint, substantially as set forth.

3. The combination with a receptacle for fluid cement mortar, a pistonand means for operating the same to force the fluid cement mortar fromsaid receptacle, a duct of porous textile fabric in connection with saidreceptacle to receive the mortar therefrom and a textile cover adaptedto be fastened over the pipe-joint, said parts being arranged andadapted to operate, substantially as set forth.

4. In a device for fillin g the joints of connecting pipe-sections withcementitious matter, the combination with the mortar-receptacle D,separate and independent of the said sections, a cover adapted to extendaround the pipe and convey the mortar into the joint formed by saidsections, a duct connecting said receptacle and cover, a bail serving asa guide or hearing, a piston, a piston-rod extending from said piston tosaid bail, and having bearing 0, and a lever fulcrumed on said bail, andengaging said piston-rod to depress the same, substantially as and forthe purposes set forth.

5. In a device for filling the joints of connecting pipe-sections withfluid cementitious matter, the combination with the receptacle D, havingan open upper end, a spout at its lower end, and a bail extending overand above said open end and recessed to receive the piston-rod, apiston, a piston-rod, extending from said receptacle upward through saidopen end of the receptacle and engaging the said bail, a lever engagingthe piston-rod, and means for transmitting the fluid cementitious matterto the joint under pressure, substantially as set forth.

6. In a device for filling the joints of connecting pipe-sections withfluid cementitious matter, the combination with the receptacle D,separate from and independent of the pipesections, and having an openupper end adaptedto allow the withdrawal of the piston, a bail extendingover said open end, a piston separable from said receptacle, apiston-rod having a series of bearings, and adapted to press againstsaid bail, a duct leading from said receptacle to said pipe-section anda cover for conveying the cementitious matter around the joint underpressure of said piston, substantially as set forth.

7. In a device for filling the joints of connecting pipe-sections withsolidifiable cementitious fluid, the combination with a cylindricalreceptacle D, separable from and independent of the pipe-sections,mounted upon a bed-plate K, and, at its upper end, having an opening toallow the insertion of the mortar and the withdrawal of the piston, abail extending over and above said opening, a piston and its rod thelatter bearing at one side of said bail, a lever bearing against saidpiston-rod at the side opposite that engaged by the bail, a duct leadingfrom the receptacle to the pipe sections, and a cover, all said partsbeing arranged and combined substantially as set forth.

8. The combination with a cylinder, independent of and separate from thepipe-sections, its piston and means for operating said piston in saidcylinder, a duct leading from said cylinder to said pipes, and aband-like cover of textile fabric adapted to be fastened over the jointformed by the meeting ends of the pipe-sections, and form a receptaclewith said meeting ends, substantially as set forth.

9. The device for filling the joints of pipes with cementitious matterconsisting of a receptacle D, separable from and independent of the pipeand open at its upper end, a bail extending over and considerably abovethe open end,of said receptacle, alever fulcrumed at one side of saidbail a piston working within the receptacle, a piston-rod a series oflateral projections, and bearing on said bail, and held thereagainst bysaid lever, said lever being loosely fulcrumed to allow a free transferfrom bearing to bearing, a duct and means for leading the cementitiousmatter, around the pipe, substantially as set forth.

10. The combination with the cylindrical receptacle for mortar separablefrom and independent of the pipes, a duct consisting of flexible textilefabric leading to a cover adapted to surround the pipe at the jointformed by the sections, said cover consisting of a band of textilefabric adapted to be bound around the pipe over the joint to close thesame, and a piston and means for operating the same, all arranged andoperating, substantially as set forth.

11. In a device for filling the joints of connectin g pipes with asolidifiable cementitious fluid, the forcing apparatus comprising acylinder, open at its lower end to allow an ejection of the fluid underpressure, and open at its upper end to allow the removal of the piston,a piston hugging the walls of said cylinder and removable from saidcylinder through said upper openings, a bail or guide G, extending oversaid open upper end, a pistonrod, having a series of projections at oneside and bearing on said bail at the other, and a lever looselyfulcrumed on said bail and movable laterally away from the piston-rod toadmit a free transfer from one projection to the next, said parts beingarranged and combined, substantially as set forth.

GUSTAV LEHLBACH.

\Vitnesses:

WAINWRIGHT RIPLEY, HERMAN B. LEHLBACH.

